person made

src/Person.java

+public class Person {
+    private String firstName;
+    private String lastName;
+    private String id;
+    private int joiningYear;
+    private Department department;
+
+    public String getFullName() {
+        return firstName + " " + lastName;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public int getJoiningYear() {
+        return joiningYear;
+    }
+
+    public Department getDepartment() {
+        return department;
+    }
+}